B21F 39 - Making wheel spokes from wire

Patents for B21F 39 - Making wheel spokes from wire (13)
07/2013
07/25/2013	WO2013108186A1 A method for the manufacture of a spoke for spoked wheels, spoke forming machine and spoke obtained with said method
02/2007
02/27/2007	US7181844 Method for increasing structural strength of spokes of a bicycle or a motorcycle
07/2006
07/05/2006	CN1796019A Method for structuring teeth parts of improved bicycles and vehicles
12/2004
12/30/2004	US20040261487 Method for increasing structural strength of spokes of a bicycle or a motorcycle
03/1999
03/04/1999	WO1999010118A1 Method and device for producing an essentially v-shaped double spoke comprising a connection rod by means of a bending cold forging technique and using this method for the production and application of the double spoke
04/1998
04/21/1998	US5740689 Wheel spoke extrusion stretcher
03/1998
03/05/1998	DE19737387A1 Double spoke, partic. for bicycles
09/1997
09/10/1997	EP0794071A2 A wheel spoke and a method for the production thereof
08/1997
08/07/1997	DE19650891A1 Applying identification marks to object
11/1996
11/06/1996	CN1033221C Double-phase steel spoke for bicycle and mfg. method thereof
09/1995
09/07/1995	DE4407118A1 Spoke esp. for bicycle wheel
04/1994
04/20/1994	CN1085472A Application of double-phase steel spoke for bicycle and its manufacturing technology
06/1993
06/23/1993	CN2136704Y Fully automatic hydraulic control material supply machine